Plants, like all living things, need to be properly taken care of in order to stay healthy and thrive. Along with regular waterings and the right amount of light, houseplants need a maintenance cleaning every once in a while. As long as you're cleaning the rest of your house anyway, you might as well give your houseplants a little extra attention. Not only will cleaning your houseplants keep them dust-free, but you'll be more aware of any pests or other problems they might be having.